It's every parent's nightmare. Your teenager gets heavily involved in drugs, and you don't even know it's happening.
In the first of our new series from Fixers - the campaign that helps young people make a difference - we meet teenager Jade Clement who says cannabis nearly ruined her school career, and cut her off from family and friends.
With government figures showing that nearly a third of young people have tried cannabis, and new research suggesting it may damage teenagers' brains, she's warning that the drug is no joke.
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Holly has the latest forecast for the east of the region.
Holly has the latest forecast for the west of the region.
People could suffer vision loss or infection from the lenses, which are often sold illegally online, in shops and on market stalls.